“Operation White Christmas,” as the year-old investigation is code-named, so far has resulted in the arrests of 54 individuals, mostly in the Portland area, leading to 11 criminal cases in state court and another 43 in federal court.

As for its scope, the investigation based in Portland and Multnomah County rivals the prosecutions of members of another violent gang, the Aryan Brotherhood of Texas.

Others arrested, investigators say, are associates of the Gypsy Jokers outlaw motorcycle gang whose members were believed to be involved in firearms and drug trafficking with the white supremacist gangs.